Locking device for talking-machines.



J. WOLFF.

LOCKING DEVICE FOR TALKING MACHINES. APPLICATION men AUG- 19, 1916.

1 ,25951 89 Patented Mar. 12, 1918.

A Itornya.

rennin JOSEPH wonrr', or

CORPORATION, A conrone'rron or new Yen's.

LOCKING DEVICE I To all whom it may concern:

' land, and a resident.

.tached astylus bar 3 not be remove taken on the line Be it known that I, Josnrir Women, a subject of the King of Great Britain and Ireof the borough of Brooklyn, county of 'ngs, State of New York, have invented a certain new and useful Improvement in Looking Devices for Talking-Machines, of which the following is aspecification. f Y

My invention relates to looks, and more particularly to a device for securing the reproducer or speaker of a talking machine to the tone-arm, and has for its objects to produce a device whereb the reproducer will be securely locked to t e tone-arm, and cand by an unauthorized person produce a device A further object is to which will he simple and inexpensive to manufacture, and eifective in operation. I

I have illustrated my invention 'in the accompanying drawings, in which like reference characters designate corresponding parts in all of the several figures.

In the drawings,-- Figure 1 is a rear elevation of a reproducer partly in section, the section being 1- -1 of Fig. 2; Fig. 2 is .a section on the line 2-2 of Fig. 1;

Fig. 3 thimble in section;

Fig. 4 is an elevation of the end of the tone-arm; and

Fig. 5 is an elevation of the key. In the drawings, 1 designates a reproducer which carries therein a cha phragni 2. To one sideof the shell is atvvhich carries a socket d. and which is connected to the center of the diaphragm by a bar 5. At the rear of the shell, and communicating therewith is' a cylindrical boss 6. A thimlole 7 is carried between cushionsS in the boss and a ring 9 secured to the end of the boss retains the thimblein position. A pin 10 on the thimhle projects into a longitudinal slot 11 in the hose, and prevents rotation of the thnnble.

Rotatably with two diametrically which is provided i l, and at the other jects ed to one side oi the spindle, and'hae Specification of Letters Patent.

,tension of is a plan View of the lock with the the shell of ounted in the wall of the thimble is a s indie 12 which carries at one" end, on the outside of the thimhle, a disk 13,

the thirnhle, with a lever 15 BIiiOOKLYNQNEW YORK, ASSIGNOR T0 SQNOEA EHQHGQEME roe. TALKING-MACHINES.

;.Paftented Mar. hi5, this.

, Application med August is, me. we; n35 fiasco.

its end upturned at an angle so as to engage the bore of the thimhle. spring. 1? is anchored in the thimhleand its free end engages the finger l6 and presses it toward the rear of the thitnhle.

The tone-arm 18 is provided at its outer or smaller end with an inclined slot 19, and

one side of the slot has a notch 20 therein,

near the open end of the'slot.

I provide a key 21 having two projecting pins 22, which are spaced apart so as to engage'the perforations 14 in the disk 13. The key is provided with an eye,.by means of which it may be carried on a key ring.

The operation of my improved lock is as follows:

The reproducer is placed in position with the thimble in axial alinement with the end of the tone-arm and with the spindle 12 in alinement with the open end of slot 19. The thimble is now placed over the end of the tone-arm and moved forward with a rotary movement until the ,sfipindle is seated in the inner end of the S10 As the spindle progresses toward the inner end of the slot, the wall of the slot will engage the upturned end of the finger 16 and move it against the he spring 17 until the finger reaches the notch 20. The speaker is now locked to the tone-arm, and cannot be removed w'thout being unlocked.

To remove the speaker, the pins 22 of the key 21 are inserted in the perforations lei, and the disk 13 is rotated in the counterclockwise direction. The finger 16 will he swung out of the notch 20. The speaker will berotated in the counter clockwise direction, and the engagement of the spindle 12 with the inclined slot will move the thimhle ed the end of the tone-arm.

"" In accordance with the provisions of the platent statute, I have described the principle oi my invention together with the apparatus which I nowconsider to represent the best embodiment thereof, but I desire to have it understood that the apparatus shown is merely illustrative and that the invention can be carried out in other ways;-

Having now described my invention, what 1 claim and desire to secure by Letters ?atent is:

1. in a talking machine, the combination with a .reproducer, a spindle carried by the reproduc'er, a finger carried by the spindle, of e tens-semi, there a slot in the tonewith a reproduce-r, a spindle carried by the reproducer, a finger carried by the spindle, a spring engaging the finger, or" a tone-arm, there being a slot in the tone-arm for engagement with the spindle, said tone-arm having a notch for engagement with the finger, and a key for'moving the finger.

3. In a talking machine, the combination with a reproducer, a spindle carried by the reproducer, a finger carried by the spindle Within the reproducer, a perforated disk carried by thespindle outside the reproducer, of a tone-arm having an inclined slot in its extremity, there being a notch in a wall of the slot, said slot engaging the spindle, said notch engaging the finger, and a key for engaging the perforations of the disk, to rotate the spindle and release the finger from the notch.

4. In a talking machine, the combination with a reproducer, a spindle carried by the reproduoer, a finger-carried by the spindle Within the reproducer, a spring engaging the finger, a perforated disk carried by the spindle outside the reproducer, of a tonearm having an inclined slot in its extremity, there being a notch in a Wall of the slot,

said slot engaging the spindle, said notch en- JOSEPH WOLFF.

Witnesses WM. VARIN, C. WIDDER. 

